package com.itheima.common;

import com.itheima.domain.User;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 异常捕获类，捕获程序抛出的异常并进行处理
 */
@ControllerAdvice(annotations = {RestController.class, Controller.class})
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
    /**
     * 异常处理方法
     *
     * @return
     */
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex) {
        log.error(ex.getMessage());
        //捕获异常，判断是否是添加时重名
        if (ex.getMessage().contains("Duplicate entry")) {//contains包含某个字符串
            String[] split = ex.getMessage().split(" ");
            String msg = split[2] + "已存在";
            return R.error(msg);
        }
        return R.error("未知错误");
    }
    /**
     * 异常处理方法
     *
     * @return
     */
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex) {
        log.error(ex.getMessage());
        return R.error(ex.getMessage());
    }

    /**
     * 捕获验证码，并抛出
     * @param ex
     * @return
     */
    @ExceptionHandler(UsersException.class)
    public R<String> usersException(UsersException ex) {
        log.error(ex.getMessage());
        String message = ex.getMessage();
        return R.error("验证码为:"+message);
    }

    /**
     * 拦截所有运行错误
      * @param ex
     * @return
     */
    @ExceptionHandler(RuntimeException.class)
    public R<String> exception(CustomException ex) {
        log.error(ex.getMessage());
        return R.error("未知错误");
    }

}
